Broker · Belvedere Tiburon, Marin County
Joseph Valentine Costello III
California real estate broker · licensed since 1982 (44 years).
✓ Status Licensed✓ Checked Oct 27, 2026✓ Facts from DRE CurrList
About this record
This page shows what the California Department of Real Estate publishes in the CurrList about license #620045 (Broker). We do not recommend or refer. Status can change after our check date; the official DRE Public License Lookup is the source of truth.
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